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Shanghai zealwe technology Co., Ltd. was Founded in Shanghai city.

It is a high-tech company specialized in quality control and improvement of solar power. Since its establishment, it always holds the concept of “Your quality, we defend”, and take the mission of "Enhance power quality, and Promote photovoltaic power”. Zealwe focuses on the photovoltaic industry to improve quality and efficiency.

Photovoltaic products developed by the Zealwe are used widely around the world

The company's products are mainly used in cell and module aging test, solar power plants site test, solar power plant power generation improvement, etc.. Photovoltaic product aging test products meet international standards such as IEC61215, IEC61730, IEC61701, IEC62804, IEC61853, IEC62979, UL1703; Zealwe has extensive experience in the construction of aging labs for photovoltaic products. We can undertake turnkey projects for aging laboratories, complete laboratory centralized monitoring, and assist clients in getting CNAS certification.

The company's PID testing products are at the leading level in the world, occupying 96% of the industry market. Mobile testing platform is the leader within the world. PID recovery and prevention equipment is widely used with global solar power stations and could match all of the inverter used in the market. String power optimization (S-MPPT) products can effectively solve the voltage mismatch problem of solar power plants and have been widely used in the global market.

  • 96%

    PID test products have a market share of 96%.

  • 86%

    PPID recovery products have a market share of more than 86%.

  • 500MW

    Have a global installed capacity of more than 1GW.


The company passed the ISO9001 quality management system certification.

And has a number of patented technology. Our company has a perfect after-sales service system. We promise to carry out life-long maintenance of the product to ensure the customer's uninterrupted use. Each product undergoes the most rigorous functional test and aging test before shipment. The number of existing customers exceeds 100.